I find that finding new books to read is anything
but tough. My "to be read" pile has more than 1,000 books in it. I don't look at Amazon's recommendations for me, but I do pay attention to the "other people bought this too" section of the Amazon product pages for books that I really like. I would wager that 60% of my "to be read" pile is based on finding books this way.
This is a useful site:
http://www.yournextread.com